In the EN50332 standard, an artificial artificial head (HATS) with standard test ears is used for testing in a standard acoustic laboratory. The test signal is strictly regulated and must be
According to the standard IEC60268-1, corresponding to different playback equipment, the test signal should be produced according to the corresponding test recording level specified in the standard;
The noise reduction system must be turned off, the volume adjusted to the maximum, and the tone adjusted to the position where the headphones reach the maximum sound pressure; the test will be repeated five times, and the test result of the maximum sound pressure level will be equal to
Average value; and for simple playback equipment without headphones, it is necessary to measure and evaluate its maximum output voltage.
The EN50332-2 standard specifies the respective indicators of the player and the headset: the maximum output voltage of the audio output port of the player (MaximumOutputVoltage), the limit is
≤150mV; the broadband characteristic voltage of the earphone (WideBandCharacteristicVoltage), the limit is ≥75mV.
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